The Kelvin Aerolite 30 Sleeping Bag is a multifunctional layer for active time in camp, cold glassing sessions or dreaded midnight nature calls. Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the aesthetics and performance of down insulation, but with warm-when-wet performance. Featuring a 30-degree comfort rating, it’s designed to be an extension of your SITKA clothing systems for full-season performance, even in the wettest conditions. Jacket-like features include zippered, functional armholes; contoured shoulders and hood, and a center-front two-way zipper.